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85Rb electromagnetically induced transparency and absorption on two collinear 5S1/2→5P1/2→5D3/2→ 25F5/2 three-photon cascade schemes

  • Shuaijie Li
  • Alisher Duspayev
  • Georg Raithel
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Abstract

We present a comprehensive study of three-photon electromagnetically induced transparency (EIT) and absorption (EIA) in room-temperature Rb vapor. Using the cascade system 5S1/2→5P1/2→5D3/2→ 25F5/2 in 85Rb, we explore two collinear laser-beam configurations. The detunings of the upper two lasers of the cascade system are varied. In both configurations, the probe transmission maps contain rich sets of EIT/EIA features and substructures. To explain these, we utilize a dressed-atom and a quantum Monte Carlo trajectory method. The latter includes 108 relevant fine- and hyperfine-structure levels and their magnetic substates, accounting for coherent optical drives, optical pumping, atom recycling, electromagnetic decays via the 5PJ levels, and velocity-changing and hyperfine collisions. We find quantum-trajectory solutions of the Lindblad master equation, which show good agreement with experimental data and aid in finding physical explanations for the observed spectra. To further explore collision-induced spectral features, collisional loss of EIT/EIA visibility, velocity-changing and hyperfine collisions, we acquire spectra in Rb cells with 50 and 500~mTorr of Ar gas. Our work is of interest to studies of multi-level EIT systems that underpin emerging quantum technologies, where accurate accounting of internal atomic structure, laser beam geometry, optical pumping, transit time, and collisional effects is critical.

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Cite

BibTeXRIS
BibTeX
@misc{li202685rb,
  title = {{$^85$Rb electromagnetically induced transparency and absorption on two collinear $5S_1/2\rightarrow5P_1/2\rightarrow5D_3/2\rightarrow 25F_5/2$ three-photon cascade schemes}},
  author = {Shuaijie Li and Alisher Duspayev and Georg Raithel},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.00416},
  eprint = {2611.00416},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.00416},
}
RIS
TY  - UNPB
TI  - ^85Rb electromagnetically induced transparency and absorption on two collinear 5S_1/2→5P_1/2→5D_3/2→ 25F_5/2 three-photon cascade schemes
AU  - Shuaijie Li
AU  - Alisher Duspayev
AU  - Georg Raithel
PY  - 2026
DA  - 2026/11/01
PB  - arXiv
DO  - 10.48550/arxiv.2611.00416
UR  - https://arxiv.org/abs/2611.00416
AB  - We present a comprehensive study of three-photon electromagnetically induced transparency (EIT) and absorption (EIA) in room-temperature Rb vapor. Using the cascade system 5S_1/2→5P_1/2→5D_3/2→ 25F_5/2 in ^85Rb, we explore two collinear laser-beam configurations. The detunings of the upper two lasers of the cascade system are varied. In both configurations, the probe transmission maps contain rich sets of EIT/EIA features and substructures. To explain these, we utilize a dressed-atom and a quantum Monte Carlo trajectory method. The latter includes 108 relevant fine- and hyperfine-structure levels and their magnetic substates, accounting for coherent optical drives, optical pumping, atom recycling, electromagnetic decays via the 5P_J levels, and velocity-changing and hyperfine collisions. We find quantum-trajectory solutions of the Lindblad master equation, which show good agreement with experimental data and aid in finding physical explanations for the observed spectra. To further explore collision-induced spectral features, collisional loss of EIT/EIA visibility, velocity-changing and hyperfine collisions, we acquire spectra in Rb cells with 50 and 500~mTorr of Ar gas. Our work is of interest to studies of multi-level EIT systems that underpin emerging quantum technologies, where accurate accounting of internal atomic structure, laser beam geometry, optical pumping, transit time, and collisional effects is critical.
ER  -